Abstract
This study explores the influence of some gear parameters such as addendum height, teeth number and module on load sharing aspect and the subsequent stress analysis. The multi pair contact model in finite element technique is used for a reasonable accurate prediction of the stresses with the application of load at high pressure angle side. Also, a unique Ansys parametric design language code is developed for this study. Finally the increase in addendum height results to increase the bending stress for a load at critical loading point. However the increase in teeth number and module leads to decrease in the load sharing based bending and contact stresses.
Highlights
Gear drives are the most preferable drives for transmission of torque and motion between parallel, non-parallel and intersecting shafts
Contact strength is important for design of through hardened gears and this contact strength can be improved by different heat treatment process like case hardening and shot peening, so the modification of the gear tooth geometry as asymmetric gear is the simplest way to achieve high contact strength
A reasonably accurate estimation of Load Sharing Ratio (LSR) based contact and bending stresses is required for high quality gear drives
Summary
Gear drives are the most preferable drives for transmission of torque and motion between parallel, non-parallel and intersecting shafts. A reasonably accurate estimation of Load Sharing Ratio (LSR) based contact and bending stresses is required for high quality gear drives. Thirumurugan and Muthuveerappan (2010,2011) developed a finite element model to accurately estimate the fillet stress based on load sharing for symmetric NCR spur gears. Suggested that MPCM yields reasonably accurate than single point load model and found critical loading points for symmetric NCR and High Contact Ratio (HCR) gears based on load sharing. The present work deals to estimate the influence of gear parameters such as addendum height (ha), teeth number (z), module (m) on the LSR based maximum bending and contact stresses in the asymmetric NCR spur gears
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